Thread feeder for warp-twisting-in machines



Nov. 6, 1928. 1,690,157

J. H. BECKER THREAD FEEDER FOR WARP TWISTING-IN MACHINES Filed Jan. 24, 1928 2 Sheets-Sheet 1 v INVENTOR, WITNESS 10x1 Bee Ker" 3 ATTORNEY.

J. H. BECKER THREAD FEEDER FOR WARP TWISTING-IN MACHINES Nov; '6, 1928. 1,690,157

Filed Jan. 24, 1928 2 Sheets-Sheet 2 INVENTOR WITNESS I John \LBedex I A TTORNEY Patented Nov. 6 1928.

UNITED STATES PATENT oFF ICE.

JOHN HENRYBECKEILOF RICHMOND ILL, NEW YORK, AssIGnon 110 WAR? TWIST; INo-IN mnonmn COMPANY, or BROOKLYN, NEW YORK, A CORPORATION or NEW YORK.

TH READ FEEDER FOR WARP-TWISTING-IN MAGHINES.

Application filed January 24, 1928. Serial No. 249,037.

This invention relates to machines, known as warp twisting-in machines, for uniting by twisting the threads of anew warp to those of the'old warp, and particularly to warp twisting-in machines in which the warps are extended toward each other and are held with their end portions upstanding, and two of them ata time (one from each warp) are advanced laterally of themselves to the twisting means by mechanism including a spiral feeding device rotating on a horizontal 3X15.

The object is to provide a spiral feeding device which shall be simple in construction, not obscure or confuse the vision of the attendant and be self-sufiicient in not only efficiently feeding the threads to the twisting mechanism but in performing certain operations thereon incident to such feeding.

In the drawings,

Fig. 1 is aside elevation of a warp twisting-in machine embodying the improved spiral feeding device;

Fig. 2 is a front elevation of the spiral feeding device, with parts of the machine in section; and V Fig. 3 is a fragmentary side elevation showing the parts in another position.

. The following parts of the machine are or may be substantially as heretofore (see United States Patents Nos. 648,738 and 1,403,067) The machine frame 1 having the fixed horizontal bars '2 over-which thetwov warps A and B extend toward eath other; the vertically reciprocating structure 3 sliding in frame 1 and having a clamp 4 for the upwardly extending end portions A and B of the two warps and a pair of forwardly projecting rods 5 which: overlie the warps (Fig. 2) the horizontal guides 6 formed as a fork sliding longitudinally of itself back and forth between the rods and under which guides the warps extend before their end portions extend up to the clamp 4., the same having upwardly inclined terminals 6 formed with hooks 6 the twisting mecha nism comprising the fixed pad 7 and the rotating pad 8 between which two threads (one from each warp), having been separated from their warps, are twisted together and during such intertwisting have their portions A and B cut off by the oscillated knife 9; the pairs of reciprocating hookbars 10 and 11 which maintain leases or crosses in the warp end portions A and B (Fig. 2) and in each pair have their hooks oppositely projecting, said hook-bars being turned half-revolutions and on each such movement drawing the main body of each portion A B back, so that the outermost thread of each stands clear; the oscillating finger 12 which separates these two threads from the main bodies A and B so that the spiral (to be described) can intervene and then feed such two threads to the twisting mechanism, and the mechanism in part shown at the right of the frame in Fig. 1 for causin the necessary cooperative functioning of those of the. foregoing parts which have movement, to wit: the reciplocation of structure 3, with its clamp 4 and rods 5, the rotation of member 8 of the twisting mechanism and oscillation of knife 9, the reciprocation of fork 6, the recipro-,

cation and rotating of the hoolebars, the oscillation of finger 12, and the rotation of said spiral feeding device. The vertical movement of structure L3-5 is not mate rial to the present invention, being designed as usual principally to agitate the warps, each maintained with .a lease :or cross by the hook-bars, and break down filamentous linking together of their constituent threads.

Said device in the example illustrated includes a hub or body portion 13 fixed on a rotating shaft 14 and the spiral portion progressing spirally around the axis of the hub and which s rin 's from one end of the hub and has its other end free and projecting inwardly toward frame 1 so as to enter between the main warp bodies and the two threads separated therefrom by finger 12 to start the feeding of the latter en each rev-' olution.

1: There will be always several pairs of threads undergoing advancement besides the pair undergoing twisting, as at portions I, II and III, Fig. 1. Tlie'pair at III is next to slide up the inclined stern-iinalsi of the guides or arms G ef-the fork (then almost at its outward limit) toward the twisting mechanism, structure i85,5havin-g risen, as shown, to permitthi-s. The pa-irJat III should be urged forward, so as to be .posi tioned for sliding up" theinciines of 6, in a positive'and quick manner thus to insure parting this pair from one or both of the pair at II and leaving the latter behind should they be caught therewith in any way. Hence spiral 15 according to this invention. not only has as to its volute portion which extends from 7) rearward, say to a in Fi l, a greater pitch than the next inward volute portion but at point c it is formed to pass closer to guides (5 than the latter portion, that is. with a radially outward bulge (Fig. 2). Consequently not only does the pair at if tend to lag behind the pair at III up to the instant when the latter should be transferred to the inclines 6 but at that instant the pair at HI receive a positive and quick forward impulse effective to separate them from either or both of the pair at 11 should the latter be caught therewith.

2. hen the thread slides up inclines (3 and becomes caught by books (5" of guides t3, the latter, advancing, bring them where they should stand stretched between such hoolcs and an abutment formed by the crotch of a fixed fork 16, with their stretched in the twisting planecoincident .tn the. acting faces of pads T8. otherwise the e will be a failure to twist. According to this invention the spiral portion 15 of its-i f forms this function, in the example shown by being made to spring from the outer side ol' body portion or hub 15}, as at in, and then to cross its periphery in spaced relation thereto, as at y, Figs. 1 and 3. lVhen the part .r-y acts on the thread pair at IV it bends them around the hub periphery (see Fig. 33, showing the position to which the spiral device has now rotated), whose inner side slightly outward of said plane and opposes the advance of the threads, so that they become full seated at the abutment.

Thus. without auxiliaries, a simple form of spiral device is etteetive to perforn'i the general function of feeding the pairs of threads successively and in particular (1) insures the threads III rising up the inclines without taking another thread or threads with them and (2) causes each pair of thre ds to become stretched exactly in the plane for twisting.

Having thus fully described my invention, what I claim is:

1. In a warp twisting-in machine, the combination of a frame, a pair of horizontal guides projecting from the frame and between which the two warps extend and haviug upwardly inclined termii'ials, means above the guides to hold the two ends of the warp. and a rotating spiral device, journaled with its axis horizontal and relatively between said means and guide, for advancing tl threads along the guides to the terminals successively in pairs each comprising '1 thread from each warp, the spiral of said device having that volute portion thereof which advances the threads along the parts of the guides immediately adjoining their terminals of greater pitch than that relate portion thereof which advances the threads to said parts and having the first-named portion thereof formed to pass closer to the guides than its second named portion.

2. In a warp twisting-in machine, the combination of a frame, a pair of horizontal guides projecting' from the frame and between which the two arps extend and having upwardly inclined terminals. means above the guides to hold the two ends of the warp. and a rotating spiral device. journalcd with its axis horizontal and relatively hetwecn said means and guide, for advancing the threads along the guides to the terminals successively in pairs each (r)11l1)1'l5 l!r11 a thread from each warp. the spiral of said device having that volute portion thereof which advances the threads along the parts of the guides inuncdiatcly adjoining their terminals formed to pass closer to the guides than that volute portion thereof which advances the threads to said parts.

:3. In a warp twisting-in machine. be combination of spaced means to hold the warp threads taut, an abutment spaced from one such means and against which the threads are to be advanced to thereupon lie stretched ljietwcen the abutmcl'itand latter mea and rotary thread advancing means havimr its axis extending lengthwise of the ath oi advance of the threads and including a body portion and an elongated portion havin; one end connected to the body portion. progressing spirall around said axis op 'msite to the direction of advance of the threads and having its other end free, said elongated portion having between its ends a surface formed to cam the threads against said abutment.

4-. In a warp twisting-in machine. the combination of spaced means to hold the warp threads taut, an abutment spaced from one such means and against which the threads are to be advanced to thereupon lie stretched between the abutment and latter meansv in a given plane, and rotary threzul-mlvancing means comprising a hub having its axis lengthwise of the advance of the threads and one side thereof arranged to oppose such advance of the threads but relatively beyond said plane in the direction of su h advance and a thread-feeding spiral progressing arourd said axis and having a free end directed relatively oppositeto the direction of advance of the, threads. said spiral springing from the other side of the hub and crowing the periphery thereof in spaced relation to such periphery.

In testimony whereof I ailix my signature.

JOHN H. BECKER.

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